Simple node script used to generate a k8s compatible docker `config.json`

gen-docker-config.js

/**
 * This script will create a base64 string that will be used by K8S to pull
 * images from the Docker Registry.
 *
 * More info here: https://kubernetes.io/fr/docs/tasks/configure-pod-container/pull-image-private-registry/
 */

const encodeToBase64 = (str) => Buffer.from(str).toString('base64');

const createFinalString = (obj) => encodeToBase64(JSON.stringify(obj));

function main({
  registry = 'https://index.docker.io/v1/',
  username,
  password,
  email,
}) {
  return createFinalString({
    auths: {
      [registry]: {
        username,
        password,
        email,
        auth: encodeToBase64(`${username}:${password}`),
      },
    },
  });
}

const [, , username, password, email, registry] = process.argv;

console.log(main({ username, password, email, registry }));